Heating Valves

What is the product warrantly on Myson Valves?

2 years.

What is the difference between a straight valve and angled valve?

It is the way the water flows – if the water flows through the valve in a straight position, it is known as a straight valve. If the water flows through the valve at an angle, then it is known as an angled valve.

What quality standards apply to the Myson range of Manual Valves?

All Myson valves are manufactured under BS EN ISO 9001:9002. The Matchmaster and Fullflow ranges are fully compliant with BS 2767.

What is a "drain off" facility?

A ‘drain off’ facility is an additional feature offered on all Myson manual valves. It allows water to be easily drained from either the radiator or heating system, with the minimum of inconvenience.

What is a Thermostatic Radiator Valve (TRV)?

TRVs sense the air temperature where they are located and regulate the flow of water through the radiator to which they are fitted. They do not control the operation of the boiler.They should be set at a level that gives your required room temperature. These settings may well have to vary from room to room, and the TRVs should be set to suit each room and then left.

Turning a TRV to a higher setting will not speed up the heating of the room. The speed of heating is determined by the boiler size and setting, and the radiator size. Turning a TRV to a lower setting will result in the room being controlled at a lower temperature level, and saves energy.

TRVs need a free flow of air to sense the temperature, so they must not be covered by curtains or obstructed by furniture.

TRVs are not capable of turning off the boiler when the whole house is warm. To do that a room thermostat is required as well. The radiator in the room where the room thermostat is positioned should not normally have a TRV, but, if it does, keep the TRV on the maximum setting and adjust the room thermostat as explained with the instructions.

What quality standards apply to the Myson range of TRV's?

How do TRV's work?

The TRV operates in response to changes in room temperature. The temperature sensing element incorporated in the head opens and closes the valve as the room temperature changes.As the room cools down the sensing element recognises the changes and opens the valve to allow the radiator (and room) to heat up.As the room heats up to its required level, the sensing element will gradually close the valve decreasing the heat to the radiator and room.When the desired room temperature is achieved the TRV will maintain this temperature by slowly modulating.

What effect does a TRV have on radiators?

When the desired room temperature is achieved, the radiator will cool down or go cold, until the room temperature drops below the selected level the thermostat has been set at.

How do I set the required temperature on my TRV?

The Myson TRV has an incremental scale of four degrees between settings (8 ° C -28° C), set the valve by turning the TRV head clockwise or anticlockwise dependent on the required comfort level needed.

What is an Automatic Bypass Valve?

An automatic by-pass valve is designed for use in domestic central heating systems. Its purpose is to maintain constant pump pressure within the system.

What are the advantages of an Automatic Bypass Valve?

An automatic by-pass valve ensures minimum water flow rates through the boiler. It reduces system noise associated with high pressure pumps. It eliminates the need to fit an uncontrolled radiator to act as a system by-pass and it also increases system efficiency. The automatic by-pass valve also aids the operation of thermostatic radiator valves.

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